40r min down the hole hammer

Brand Name:SOLLROC

Model Number:IR DHD3.5 shank

Place of Origin:China

...Hammer Down The Hole Hammer 3 Inch Hammer Without Footvalve For Shank IR3.5 Products specifications: Shank Fit IR DHD3.5 shank Length (less bit) 930mm Outer diameter 82mm Top sub thread API 3 1/2" REG pin Weight (less bit) 25kg (55lbs) Hole range 90mm-105mm Working pressure 10-25bar Impact rate at 1.7 Mpa 28Hz Recommended rotation speed 25-40r/min Air consumption at 7-14 bar 134-265CFM Our HD-A serises (without footvalve) DTH hammer

Model Number:CR90

Place of Origin:China

Brand Name:Super Diamond

...Hammer Carbon Steel , Rock Drilling Tools Low Air Pressure Length(without bit) Weigth(without bit) External diameter Bit Shank Hole range Connection Tread 800mm 19.0kg φ90mm CIR90 φ85-φ110 T48×10×2 Working Pressure Impact rate at 1.5Mpa Recommended rotation speed Air consumption 0.5Mpa 0.7Mpa 0.5-0.7Mpa 14HZ 20-40r/min 6.5m³/min 8.0m³/min The Characteristics Of Low Air Pressure DTH Hammer CR series DTH Hammer...

Brand Name:MIROC

Model Number:DTH Hammer

Place of Origin:China

... 73(without bit) Working Pressure(Mpa) Air Consumption(m³/min) 1.3-2.3 1.0Mpa: 9m³/min 1.8Mpa: 15m³/min 2.4Mpa: 23m³/min Impact rate at 17 bar Connection Rod Thread Recommended Rotation Speed Bit Shank 25HZ API 3 1/2'' Reg API 2 7/8'' Reg 25-40r/min.